Storing Values in Android

Intent

How to use putExtra() and getExtra()

Use this to "put" the file...

Intent i = new Intent(FirstScreen.this, SecondScreen.class);

i.putExtra("name", "value");

Then, to retrieve the value try ...

Bundle b = getIntent().getExtras();

if(b!=null){

String j = b.getString("name");

}

Example :-

first Screen.java

text=(TextView)findViewById(R.id.tv1);

edit=(EditText)findViewById(R.id.edit);

button=(Button)findViewById(R.id.bt1);

button.setOnClickListener(new OnClickListener() {

    public void onClick(View arg0) {

        String s=edit.getText().toString();

        Intent i=new Intent(MainActivity.this, newclass.class);

        i.putExtra("name", s);

        startActivity(i);

    }

});

Second Screen.java

public class newclass extends Activity

{

    private TextView Textv;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.intent);

        Textv = (TextView)findViewById(R.id.tv2);

        Bundle b = getIntent().getExtras();

        if(b!=null)

        {

            String j =(String) b.get("name");

        }

    }

}

Shared Preferences

Use this to "put" the file...

SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(getContext());

Editor editor = prefs.edit();

editor.putString(PREF_NAME, "");

editor.commit();

Then, to retrieve the value try ...

SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(YouActivity.this);

String servername = settings.getString("sharedPreferencesKey", "defaultValue");

server.setText(servername);